• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

To investigate how temperature affects the rate of the reaction with catalyse and hydrogen peroxide

Extracts from this document...

Introduction

Biology coursework Aim To investigate how temperature affects the rate of the reaction with catalyse and hydrogen peroxide Prediction I predict that at the lower and higher temperatures the reaction will slow to the point that the reaction does not occur. This is because the enzyme will de-nature and will not break down the hydrogen peroxide. I believe that the faster reactions will be at around 20�C because this is about the temperature that the potato will be experiencing in the soil and so its natural conditions will be in effect. Plan Apparatus * 2x 5ml� syringes * Potato puree * Hydrogen peroxide 10V * 100cm3� measuring cylinder * bee-hive shelf * bowl * ice cream tub * kettle * ice * conical flask * tube * water Method 1. ...read more.

Middle

a wide range of results from the temperatures that will be too cold for the catalyse and too hot so I can get the complete range. Using preliminary results I am using 10V hydrogen peroxide and 10cm3� of potato puree to get results that will not exceed 100cm3� and will be large enough to get more accurate and easy to measure results. Fair Test To make sure that the experiment is a fair test I will keep the same: * Volume of Potato puree * Volume of hydrogen peroxide * Time reaction is allowed to run on for * The same starting volume of oxygen in the measuring cylinder * Same length of tube I will also keep all the syringes in the water bath for 5mins to give the catalyse time to de-nature if it will do so. ...read more.

Conclusion

Evaluation In general the results I obtained were very reliable and kept with a distinct pattern. The only result that was an anomaly was at 60�C on the second test which gave 10 cm3; it crosses in to the 50�C results. To improve on my experiment I could have left the syringes in the water bath for longer to provide far more reliable results and make sure that the enzyme was de natured. I could also have done a test at just over 0�C to discover at what temperature the Catalyse denatures. To extend my results I could try different temperatures between 50�C and 60�C to find the exact temperature it denatures from at the higher temperatures. I could also see how the pH effects the reaction or how the concentration of hydrogen peroxide effect the rate of reaction. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Patterns of Behaviour section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Patterns of Behaviour essays

  1. THE EFFECT OF BILE SALT ON THE ACTION OF THE ENZYME LIPASE

    pH or a pH buffer to test my probe before using as this would give me a more accurate and reliable reading than distilled water which may be contaminated providing me with false pH reading. When using the pipette it was not always accurate as it was very difficult to

  2. The Effect of Catalase in the Breakdown of Hydrogen Peroxide

    Equipment: Equipment Name: Description: Use in Experiment: Explanation: Burette A glass tube with a tap at the end. Allows volumes of solution to leave. User has control over the volume that can pour out by using tap to manipulate the solute that should come out.

  1. Investigate how temperature affects the rate of the reaction with catalyse and hydrogen peroxide

    Record the volume of the oxygen released 8. Repeat three times for six different temperatures Diagrams Preliminary Work Using results from preliminary experiments I have decided to use the temperatures 10�C, 20�C, 30�C, 40�C and 50�C because that way I will be able to get

  2. Investigate the action of the Enzyme Catalyse

    If the temperature is over 40�C the catalase will be damaged by the heat therefore it will not work. Concentration: I will use the same concentration of 15 volume throughout my investigation. This is because the stronger the concentration the faster the reaction so it would be an unfair test if I used different concentration throughout.

  1. An investigation to see the difference in the rate of reaction when catalyse is ...

    - If the room temperature is quite warm then you will find that the breakdown rate will increase, there for the rate of oxygen will increase as well. The reason this happens is because when it is warmer the molecules move about more so collisions occur more frequently and

  2. Investigating the factors affecting the breakdown of hydrogen peroxide by the enzyme catalyse.

    Enzymes, which are among the most powerful catalysts, play an essential role in living organisms, where they accelerate reactions that otherwise would require temperatures that would destroy most of the organic matter. A catalyst in a solution with, or in the same phase as, the reactants is called a homogeneous catalyst.

  1. How does temperature affect the rate of reaction between catalyse and Hydrogen Peroxide.

    I found this didn't work as there was hardly if any reaction. Though, I did try to measure the reaction with a ruler. I found that the ruler maybe wasn't the best way of measuring the reaction. I then decided to use a measuring cylinder.

  2. To investigate a factor that affects the rate of reaction and why?

    As the reaction happens the solution will turn a cloudy yellow colour. When the 'X' is no longer visible underneath it the reaction has taken place. By changing the concentration of the acid and timing how long it takes until the 'X' is no longer visible it will tell us how fast the reactions are happening.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work